A Because if you do 156 x 20 it equals 3120. It’s A because the volume formula is Length x Width x height, And 156 and 20 were the only numbers given.
The answer is 3214
3 is equivelant to 0.74
2 is equivelant to 0.88...
1 is equivelant to 7
4 is equivelant to 8